Patent US3781450A successfully refreshed from Google Patents.
US3594591A
Expired / Lapsed
US
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Alternating current control device
Assignee: AUCO NV
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Filing: 1969-01-15
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Granted: 1971-07-20
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Expires: 1989-01-15
Abstract
Abstract A device for controlling AC flowing through a load by means of an AC thyristor which is triggered through a trigger control network arrangement comprising an AC diode and a network arrangement known per se which functions as a bilateral transistor. In order to obtain an automatic compensation for inequalities of the transistors used in the aforesaid network arrangement, and also in order to extend the range over which the AC current value can be controlled, a capacitor is included between said AC diode and said network arrangement known per se.
Inventors
- 👤 Robert R Laupman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:47
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/40; G05F1/44; G05F1/45; G05F1/455; G05F1/445
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
144 words
An alternating current control device comprising a triode AC semiconductor switching element (triac T), having a gate, series connected to a load, an ignition device having a resistorcapacitor circuit R1C1 which is connected in parallel to said triode AC semiconductor switching element T and includes a first resistor R1 and a first capacitor C1, a junction between said first resistor R1 and said first capacitor C1 being connected to the gate of the said triode AC semiconductor switching element T via a diode AC semiconductor switching element (diac D) characterized in that a second capacitor C3 is included between said junction of said first resistor R1 and said first capacitor C1 and a control circuit arrangement TR, the control input terminal of which is connected to a tapping of a voltage divider R4R5 which is connected in parallel to said control circuit arrangement TR.
Claim 2
Dependent Claim
144 words
An alternating current control device comprising a triode AC semiconductor switching element (triac T), having a gate, series connected to a load, an ignition device having a resistorcapacitor circuit R1C1 which is connected in parallel to said triode AC semiconductor switching element T and includes a first resistor R1 and a first capacitor C1, a junction between said first resistor R1 and said first capacitor C1 being connected to the gate of the said triode AC semiconductor switching element T via a diode AC semiconductor switching element (diac D) characterized in that a second capacitor C3 is included between said junction of said first resistor R1 and said first capacitor C1 and a control circuit arrangement TR, the control input terminal of which is connected to a tapping of a voltage divider R4R5 which is connected in parallel to said control circuit arrangement TR.
Claim 3
Dependent Claim
98 words
An alternating current control device according to claim 1, wherein a second RC circuit R2,C2 including a second resistor R2 and a third capacitor C2 is connected in parallel to said triode AC semiconductor switching element T and said junction between said first resistor R1 and said second capacitor C1 is connected to a junction of said second resistor R2 and said third capacitor C2, via a third resistor R3, said tapping of the said voltage divider R4,R5 being connected to said junction between said second resistor R2 and said third capacitor C2, via a fourth resistor R6.
Claim 4
Dependent Claim
15 words
An alternating current control device according to claim 2, wherein said fourth resistor is variable.
Claim 5
Dependent Claim
16 words
An alternating current control device according to claim 2, wherein said voltage divider R4,R5 is adjustable.
Claim 6
Dependent Claim
16 words
An alternating current control device according to claim 3, wherein said voltage divider R4,R5 is adjustable.
Claim 7
Dependent Claim
26 words
An alternating current control device according to claim 1, wherein said voltage divider R4,R5 includes a plurality of resistors, at least one of which is adjustable.
Claim 8
Dependent Claim
26 words
An alternating current control device according to claim 2, wherein said voltage divider R4,R5 includes a plurality of resistors, at least one of which is adjustable.
Claim 9
Dependent Claim
26 words
An alternating current control device according to claim 3, wherein said voltage divider R4,R5 includes a plurality of resistors, at least one of which is adjustable.
Claim 10
Dependent Claim
26 words
An alternating current control device according to claim 4, wherein said voltage divider R4,R5 includes a plurality of resistors, at least one of which is adjustable.
Claim 11
Dependent Claim
29 words
An alternating current control device according to claim 1, wherein said voltage divider R4,R5 includes a plurality of resistors, at least one of which is a temperature sensitive resistor.
Claim 12
Dependent Claim
29 words
An altErnating current control device according to claim 2, wherein said voltage divider R4,R5 includes a plurality of resistors, at least one of which is a temperature sensitive resistor.
References Cited (Backward Citations)
US3443188A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |